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CVE-2021-34550

Status Candidate

Overview

An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-006. The v3 onion service descriptor parsing allows out-of-bounds memory access, and a client crash, via a crafted onion service descriptor

Related Files

Gentoo Linux Security Advisory 202107-25
Posted Jul 12, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202107-25 - Multiple vulnerabilities have been found in Tor, the worst of which could result in a Denial of Service condition. Versions less than 0.4.6.5 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2021-28089, CVE-2021-28090, CVE-2021-34548, CVE-2021-34549, CVE-2021-34550
MD5 | 4aa4e826433b86256fbce954859e0aa9
TOR Virtual Network Tunneling Tool 0.4.6.5
Posted Jun 14, 2021
Authored by Roger Dingledine | Site tor.eff.org

Tor is a network of virtual tunnels that allows people and groups to improve their privacy and security on the Internet. It also enables software developers to create new communication tools with built-in privacy features. It provides the foundation for a range of applications that allow organizations and individuals to share information over public networks without compromising their privacy. Individuals can use it to keep remote Websites from tracking them and their family members. They can also use it to connect to resources such as news sites or instant messaging services that are blocked by their local Internet service providers (ISPs). This is the source code release.

Changes: Tor 0.4.6.5 is the first stable release in its series. The 0.4.6.x series includes numerous features and bugfixes, including a significant improvement to the circuit timeout algorithm that should improve observed client performance, and a way for relays to report when they are overloaded. This release also includes security fixes for several security issues, including a denial-of-service attack against onion service clients, and another denial-of-service attack against relays. Everybody should upgrade to one of 0.3.5.15, 0.4.4.9, 0.4.5.9, or 0.4.6.5.
tags | tool, remote, local, peer2peer
systems | unix
advisories | CVE-2021-34548, CVE-2021-34550
MD5 | 5a678a32c5a8b4bf97c9cb541df22b71
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